Identify GCF: Identify the greatest common factor (GCF) of the terms in the expression.The GCF of 72 and 9x is 9.
Factor out GCF: Factor out the GCF from the expression. 72−9x=9(8−x)
Check for further factoring: Check if the expression inside the parentheses can be factored further.The expression 8−x cannot be factored further since it is a difference of two terms that are not perfect squares or any other factorable form.
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